.container {
    display: flex;
    /* 主轴默认方向：从左往右 */
    flex-direction: row;
    height: 100%;
    width: 100%;
}

.menu {
    height: 98vh;
    width: 250px;
}

.logout {
    margin-top: 20px;
    margin-right: 10px;
}

.main {
    flex: 1;
    height: 98vh;
}

.head {
    justify-content: flex-end;
    display: flex;
    width: 100%;
    height: 50px;
}